PBE Europe as Axell Wireless 80-330558 Q115525 Private Land Mobile Repeater User Manual 80 330501HBKM
Axell Wireless Q115525 Private Land Mobile Repeater 80 330501HBKM
Manual
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24. INTERNATIONAL STATION 700MHZ BDA (80-330558-1) Rack number C09-CR-09 International Station 700MHz BDA (80-330558-1) List of Major Components Section 24.3.1. 24.3.2. 24.3.3. 24.3.4. Component Part 05-003007 09-000401 50-132105 50-132106 Component Part Description 4 Port Hybrid Coupler Dummy Load 700MHz 5 Cavity Combiner System 700MHz 4 Cavity Combiner System Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 445 of 500 24.1. International Station 700MHz BDA (80-330558-1) Rack Drawing Drawing number 80-330558 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 446 of 500 24.2. International Station 700MHz BDA (80-330558-1) System Diagram Drawing number 80-330588-1 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 447 of 500 24.3. International Station 700MHz BDA (80-330558-1) Major Components 24.3.1. 4 Port Hybrid Coupler (05-003007) This transmitter hybrid coupler is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. In this specific instance one port of 4 Port Hybrid Coupler (05-003007) is terminated with Dummy load 09-000401 (see below). 05-003007 Specification PARAMETER Frequency range Bandwidth Rejection Insertion loss Connectors Weight Temperature operational range storage 24.3.2. SPECIFICATION 700-900MHz 200MHz >14dB 6.5dB (in band, typical) SMA <1.0kg -10%C to +60%C -20%C to +70%C Dummy Load (09-000401) When a combiner system is used to split or combine RF signals, in many cases it is most cost effective to use a standard stock item 4, 6 or 8 port device where, in fact, only a 3 - 6 port device is needed. In this case the splitter/combiner module has one of its ports terminated (both uplink & downlink) with an appropriate load in order to preserve the correct impedance of the device over the specified frequency range. This has the advantage of allowing future expansion capability should extra channels or other functions become necessary. 09-000401 Specification PARAMETER Frequency Range Power Rating VSWR Impedance Temperature Range RF Connectors Dimension Weight Finish MTBF SPECIFICATION 10 - 1000 MHz 60 watts continuous Better than 1.1:1 50 Ohms -20 to +60°C N Type female 119mm x 51mm x 51mm 485grams Black Anodised >180,000 hours STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 448 of 500 24.3.3. 700MHz 5 Cavity Combiner System (50-132105) 700MHz 5 Cavity Combiner System (50-132105) consists of 5 Dielectric Cavity Resonators mounted on two 3U rack mount panels, three on one panel and two on the other 700MHz 5 Cavity Combiner System (50-132105) List of Major Components section 20.3.2.3. Component Part 04-003402 Component Part Description Dielectric Cavity Resonator Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 449 of 500 Document Number 80-330501HBKM – Issue A - Draft 265.9 6U 265.9 6U 190.50 37.7 190.50 37.7 AA ORIGINAL ISSUE PL 18/10/2007 PB PL MATERIAL - FRONT PANEL & CHASSIS - ALUMINIUM FINISH - FRONT PANEL - IRIDITE FRONT PANEL - PAINTED RAL7035 (FRONT FACE & EDGES) CONNECTORS - `N' TYPE SOCKET PRODUCT NUMBER : 50-132105 466.00 482.5 18/10/2007 GD 02/10/07 8x SLOTS SUITABLE FOR M6 FIXINGS 1:3 PORT JA4 PORT JA2 PORT JA3 I1 390 50-1321105 700MHz 5CH CAVITY COMBINER OUTLINE DRAWING PORT JA1 374 PORT JA5 AA Drawing number 50-1321105 24.3.3.1. 700MHz 5 Cavity Combiner System (50-132105) Outline Drawing STTRS DOCUMENTATION Page 450 of 500 532.2 12U 24.3.3.2. 700MHz 5 Cavity Combiner System (50-132105) System Diagram Drawing number 50-132185 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 451 of 500 24.3.3.3. Dielectric Cavity Resonator (04-003402) Cavity resonators are used in this system for their high Q factor response and power handling characteristics. Being finely tuned items, they can be prone to being de-tuned by mechanical shock or vibration therefore these units should be handled, stored and installed with care. Note that the cavities are coupled together using critical length harnesses. If any cable is to be changed the exact same length and type of cable should be used for replacement. 04-003402 Specification Specification Frequency Range Bandwidth Insertion Loss Return Loss Attenuation Power Handling (CW) Environmental Size Weight Connectors Temperature operation range storage Parameter 764 to 776 MHz * 25 kHz < 1.0 dB > 15 dB (at both ports) > 10 dB at Fc ± 1 MHz 20W IP54 124mm x 158mm x 157mm** 1.5 kg N female -20°C to +60°C -40°C to +70°C *Tuned to Customer’s specification **Height is dependant upon position of tuning plunger STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 452 of 500 24.3.4. 700MHz 4 Cavity Combiner System (50-132106) 700MHz 4 Cavity Combiner System (50-132106) consists of 4 Dielectric Cavity Resonators mounted on two 3U rack mount panels, three on one panel and two on the other 700MHz 4 Cavity Combiner System (50-132106) List of Major Components section 20.3.3.3. Component Part 04-003402 Component Part Description Dielectric Cavity Resonator Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 453 of 500 Document Number 80-330501HBKM – Issue A - Draft 190.50 37.7 190.50 37.7 265.9 6U 265.9 6U 466.00 482.50 No AA STTRS DOCUMENTATION Page 454 of 500 DESCRIPTION REVISION ORIGINA L ISSUE DATE 15/10/07 BY PL 26/10/2007 Approved GD 16/10/07 Date PORT JA4 1:3 THIS IS A PROPRIE TARY DESIGN OF AERIA L FACILITIES LTD REPRODUCTION OR USE OF THIS DESIGN B Y OTHER IS PERMISSABLE ON LY IF EXPRESS LY AUTHORISED IN WRITING BY AERIA L FACILITIES LTD SCALE TOLERANCES 8x SLOTS SUI TABLE FOR M6 FIXINGS THIRD ANGLE PROJECTION NO DECIMA L PLACEG 1mm ALL DIMENSIONS ARE IN mm ONE DECIMA L PLACEG 0.3mm 1mm UNLESS OTHE RWISE S TATED TWO DECIMA L PLACESG 26/10/2007 Checked PB PL Drawn MATERIA L - FRON T PANE L & CHASSIS - ALUMINIUM FINISH - FRON T PANE L - IRIDITE FRON T PANE L - PAINTED RAL7035 (FRON T FACE & EDGES) CONNEC TORS - `N' TYPE SOCKE T PRODUC T NUMBER : 50-132106 Tel : 01494 777000 Fax : 01494 777002 PORT JA2 PORT JA3 I1 Customer Drawing No 50-1321106 700MHZ 4 C AVITY COMBINER OUTLINE DR AWING Title PORT JA1 Aerial Facilities Limited England AA A Drawing number 50-1321106 24.3.4.1. 700MHz 4 Cavity Combiner System (50-132106) Outline Drawing 532.2 12U 24.3.4.2. 700MHz 4 Cavity Combiner System (50-132106) System Diagram Drawing number 50-132186 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 455 of 500 24.3.4.3. Dielectric Cavity Resonator (04-003402 Cavity resonators are used in this system for their high Q factor response and power handling characteristics. Being finely tuned items, they can be prone to being de-tuned by mechanical shock or vibration therefore these units should be handled, stored and installed with care. Note that the cavities are coupled together using critical length harnesses. If any cable is to be changed the exact same length and type of cable should be used for replacement. 04-003402 Specification Specification Frequency Range Bandwidth Insertion Loss Return Loss Attenuation Power Handling (CW) Environmental Size Weight Connectors Temperature operation range storage Parameter 764 to 776 MHz* 25 kHz < 1.0 dB > 15 dB (at both ports) > 10 dB at Fc ± 1 MHz 20W IP54 124mm x 158mm x 157mm** 1.5 kg N female -20°C to +60°C -40°C to +70°C *Tuned to Customer’s specification **Height is dependant upon position of tuning plunger STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 456 of 500 25. INTERNATIONAL STATION 700MHz BDA (80-330558-2) Rack number C09-CR-10 International Station 700MHz BDA (80-330558-2) List of Major Components Section 25.3.1. 25.3.2. 25.3.3. Component Part 50-132102 50-132107 50-132108 Component Part Description 700MHz Channelised Amplifier 700MHz Uplink Amplifier 700MHz Downlink Splitter Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 457 of 500 25.1. International Station 700MHz BDA (80-330558-2) Rack Drawing Drawing number 80-330558 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 458 of 500 25.2. International Station 700MHz BDA (80-330558-2) System Diagram Drawing number 80-330588-2 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 459 of 500 25.3. International Station 700MHz BDA (80-330558-2) Major Components 25.3.1. 700MHz Channelised Amplifier (50-132102) 3U rack mount shelf 700MHz Channelised Amplifier (50-132102) List of major Components Section 25.3.1.3. 25.3.1.4. 25.3.1.5. 25.3.1.6. 25.3.1.7. 25.3.1.8. 25.3.1.9. 25.3.1.10. 25.3.1.11. 25.3.1.12. 25.3.1.13. Component Part 09-000902 10-000901 11-006702 12-020804 13-003412 17-009127 17-011501 80-008902 93-910048 94-100004 96-300060 Component Part Description Dummy Load Switched Attenuator 0.25W, 0 - 15dB Low Noise Amplifier Power Amplifier DC/DC Converter Channel Selectivity Module Channel Control Module 24V Relay Board Dual Isolator Dual Diode Assembly PSU 24V Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 460 of 500 25.3.1.1. 700MHz Channelised Amplifier (50-132102) Outline Drawing Drawing number 50-1321102 POWER ON ALARM STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 461 of 500 25.3.1.2. 700MHz Channelised Amplifier (50-132102) System diagram Drawing number 50-132182 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 462 of 500 25.3.1.3. Dummy load 09-000902 Dual Isolator (770MHz) (93-910048) has one of its ports terminated with Dummy load 09-000902 in order to achieve the correct power rating to absorb the reflected power levels that can be reasonably expected within the system. 09-000902 specification PARAMETER Frequency Range Power Rating VSWR Impedance Temperature Range RF Connectors Dimension Weight Finish RF Connector Environmental MTBF SPECIFICATION 0 - 2500 MHz 25 Watts continuous Better than 1.1:1 50 Ohms -20 to +60°C N Type female 110.3mm x 38.1mm x 485 grams Black Anodised N Type male IP66 >180,000 hours 25.3.1.4. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER Attenuation Values Attenuation Steps Power Handling Attenuation Accuracy Frequency Range Impedance Connectors VSWR Weight Temperature operation range: storage SPECIFICATION 0-15dB 1, 2, 4 and 8dB 0.25 Watt ± 1.0 dB DC to 1GHz 50Ω SMA 1.3:1 0.2kg -20°C to +60°C -40°C to +70°C STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 463 of 500 25.3.1.5. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 800MHz Line Amplifier (55-165703) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER Frequency range Bandwidth Gain 1dB Compression point OIP3 Input/Output return loss Noise figure Power consumption Supply voltage Connectors Temperature operational range storage Size Weight SPECIFICATION 800 – 1000MHz <200MHz 29dB (typical) 20dBm 33dBm >18dB 1.3dB (typical) 180mA @ 24V DC 10-24V DC SMA female -10°C to +60°C -20°C to +70°C 90 x 55 x 30.2mm 290gms (approximately) Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal +Ve input (10-24V) GND Alarm RelayO/P bad Alarm Relay common Alarm Relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 464 of 500 25.3.1.6 Power Amplifier (12-020804) This amplifier is a Class AB 40W power amplifier from 860MHz to 960MHz in balanced configuration. The amplifier demonstrates a very good input/output return loss (RL) and it has a built-in Current Fault Alarm Function. The unit housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. 12-020804 specification Specification Frequency Range Gain Gain Flatness ∆Gain vs. Temperature Input RL Output RL Output Power @ P1dB DC Supply Voltage RF Input Power DC Supply At P1dB Current With no RF input (Iqc) Temperature operational range storage Parameter 860 - 960MHz ≥28.0 dB 1.0dB p-p Max 2.5dB Max 15dB Min 15dB Min 46.0dBm Min 24 ± 0.5Vdc 25dBm 6000mA Max 1700mA Max -40°C to +70°C -40°C to +100°C 7-Way Connector Pin-outs Connector Pin A1 A2 Signal +24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 465 of 500 25.3.1.7. DC/DC Converter 13-003412 13-003412 is based upon an O.E.M. DC/DC Converter module with a wide input range and and is used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 24V. In the event of failure this unit should not be repaired, only replaced. 13-003412 Specification PARAMETER Operating voltage Output voltages Output current Temperature operational range storage SPECIFICATION 18 – 75V DC 12V (typical) 5.0A (Max) -10%C to +60%C -20%C to +70%C 25.3.1.8. Channel Selectivity Module (17-009127) Channel Selectivity Module (17-009127) is employed when requirement dictates that very narrow bandwidths (single operating channels), must be selected from within the operating passband. One channel selectivity module is required for each channel. The Channel Selectivity Module is an Up/Down frequency converter that mixes the incoming channel frequency with a synthesised local oscillator, so that it is down-converted to an Intermediate Frequency (IF) in the upper HF range. An eight pole crystal filter in the IF amplifier provides the required selectivity to define the operating passband of the Cell Enhancer to a single PMR channel. The same local oscillator then converts the selected IF signal back to the channel frequency. Selectivity is obtained from a fixed bandwidth block filter operating at an intermediate frequency (IF) in the low VHF range. This filter may be internal to the channel selectivity module (Crystal or SAW filter) or an externally mounted bandpass filter, (LC or Helical Resonator). Various IF bandwidths can therefore be accommodated. A synthesized Local Oscillator is employed in conjunction with high performance frequency mixers, to translate between the signal frequency and IF. The operating frequency of each channel selectivity module is set by the programming of channel selectivity module frequencies and is achieved digitally, via hard wired links, banks of DIP switches, or via an onboard RS232 control module, providing the ability to remotely set channel frequencies. Automatic Level Control (ALC) is provided within each channel selectivity module such that the output level is held constant for high level input signals. This feature prevents saturation of the output mixer and of the associated amplifiers. Alarms within the module inhibit the channel if the synthesised frequency is not locked. The synthesiser will not usually go out of lock unless a frequency far out of band is programmed. The channel selectivity module is extremely complex and, with the exception of channel frequency programming within the design bandwidth, it cannot be adjusted or repaired without extensive laboratory facilities and the necessary specialised personnel. If a fault is suspected with any channel selectivity module it should be tested by substitution and the complete, suspect module should then be returned to AFL for investigation. STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 466 of 500 25.3.1.9. Channel Control Module (17-011501) The operating frequency for each channel in each repeater is programmed by 16 DIL (Dual In Line) switches. The programming switches are mounted in the Channel Control Module. The Channel Selectivity Modules are connected to the Channel Control Module via multi-way ribbon cables. Adjacent to the DIL switches for each channel is a toggle switch to turn on and off individual channels as required. A green LED indicates the power status of each channel. A red LED shows the alarm condition for each channel. An illuminated alarm LED indicates that the synthesiser has not achieved phase lock and that the module is disabled. There is a problem which requires investigation, often a frequency programmed outside the operating frequency range. The following information is necessary before attempting the programming procedure. 7. operating frequency 8. synthesiser channel spacing (step size) 9. synthesiser offset (IF) Programming Procedure Check that the required frequency falls within the operational frequency limits of the Cell Enhancer. For each channel required, subtract the synthesiser offset from the required operating frequency and record the resulting local oscillator frequency. Divide each local oscillator frequency by the channel spacing and check that the result is an integer (i.e: no remainder). If the synthesiser division ratio is not an integer value, check the required operational frequency and repeat the calculation checking for mistakes. Convert the required local oscillator frequency to synthesiser programming switch state patterns according to the following table. Note: the frequency of the passband will dictate the switch steps used. Switch Number 10 11 12 13 14 15 16 Switch Functions Synthesiser offset added when switch in UP position 12.5kHz step size 25kHz step size +12.5kHz +25kHz +25kHz +50kHz +50kHz +100kHz +100kHz +200kHz +200kHz +400kHz +400kHz +800kHz +800kHz +1.6MHz +1.6MHz +3.2MHz +3.2MHz +6.4MHz +6.4MHz +12.8MHz +12.8MHz +25.6MHz +25.6MHz +51.2MHz +51.2MHz +102.4MHz +102.4MHz +204.8MHz +204.8MHz +409.6MHz +409.6MHz +819.2MHz STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 467 of 500 Programming Example Frequency required: 454.000MHz Channel spacing: 12.5kHz Synthesiser offset: -21.4MHz The Local Oscillator frequency is therefore: 454.000 – 21.4 = 432.600MHz Dividing the Local Oscillator frequency by the channel spacing of 0.0125MHz: 432.600 = 34608 0.0125 This is an integer value, therefore it is OK to proceed. Local Oscillator Frequency 432.600 MHz 16 15 Switch setting: 14 13 12 11 Switch settings 10 9 0 = switch DOWN (ON, frequency ignored ) 1 = switch UP (OFF, frequency added ) 17-011501 Controller Module DIP Switch Connector Data IDC PIN 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 17-011501 Controller Module DIP Switch Connector Data 25-way Function Function Connector (12.5kHz steps) (25kHz steps) 13 Freq. bit 1 (12.5kHz) Freq. bit 1 (25kHz) 25 Freq. bit 2 (25kHz) Freq. bit 2 (50kHz) 12 Freq. bit 3 (50kHz) Freq. bit 3 (100kHz) 24 Freq. bit 4 (100kHz) Freq. bit 4 (200kHz) 11 Freq. bit 5 (200kHz) Freq. bit 5 (400kHz) 23 Freq. bit 6 (400kHz) Freq. bit 6 (800kHz) 10 Freq. bit 7 (800kHz) Freq. bit 7 (1.6MHz) 22 Freq. bit 8 (1.6MHz) Freq. bit 8 (3.2MHz) Freq. bit 9 (3.2MHz) Freq. bit 9 (6.4MHz) 21 Freq. bit 10 (6.4MHz) Freq. bit 10 (12.8MHz) Freq. bit 11 (12.8MHz) Freq. bit 11 (25.6MHz) 20 Freq. bit 12 (25.6MHz) Freq. bit 12 (51.2MHz) Freq. bit 13 (51.2MHz) Freq. bit 13 (102.4MHz) 19 Freq. bit 14 (102.4MHz) Freq. bit 14 (204.8MHz) Freq. bit 15 (204.8MHz) Freq. bit 15 (409.6MHz) 18 Freq. bit 16 (409.6MHz) Freq. bit 16 (819.2MHz) Module alarm Module alarm 17 Gain bit 1 Gain bit 1 Gain bit 2 Gain bit 2 16 Gain bit 3 Gain bit 3 Gain bit 4 Gain bit 4 15 (5V (5V 0V 0V 14 Switched 12V Switched 12V 0V 0V ------- STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 468 of 500 25.3.1.10. 24V Relay Board (80-008902) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single, dual pole, change-over relay RL1 with completely isolated wiring, accessed via screw terminals. The relay is provided with a polarity protection diode and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. 80-008902 Technical Specification Parameter Max. switch current Max. switch volts Max. switch power Min. switch load Relay isolation Mechanical life Relay approval Connector details Temperature operational range storage Specification 1.0Amp 120Vdc/60VA 24W/60VA 10.0µA/10.0mV 1.5kV >2x107 operations BT type 56 15-way 0.1" pitch -10°C to +55°C -40°C to +70°C 25.3.1.11. Dual Isolator (770MHz) (93-910048) The purpose of fitting an isolator to the output of a transmitter in a multi-transmitter environment is so that each output is afforded a degree of isolation from every other. Without the addition of Isolators, simultaneous transmissions could interfere to create intermodulation products and spurious transmissions would be created which would cause interference. Dual Isolator (93-910048) is a ferro-magnetic RF device, which has directional properties. In the forward direction, RF arriving at the input is passed to the output with minimal attenuation. In the reverse direction, RF arriving at the output due to reflected power from a badly matched load, or due to coupling with another transmitter, is routed into an RF load where it is absorbed. The isolator therefore functions to prevent reflected RF energy reaching the output port of an amplifier where it could cause intermodulation products or premature device failure. Dual Isolator (93-910048) is as its name suggests a two stage device, essentially two isolators in one casing. One isolator stage has an internal 10W load fitted, the second stage needs an external load fitted of sufficient rating to absorb the reflected power levels that can be reasonably expected within the system. In this instance Dual Isolator (93-910048) is fitted with external load 09-000902. 93-910048 Specification Parameter Frequency Range Insertion Loss Isolation Return Loss Power Handling RF Connectors Specification 760-780 MHz 0.4 dB max. 50 dB min. 23 dB min. 10W (internally fitted load) N female STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 469 of 500 25.3.1.12. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 25.3.1.13. PSU 24V (96-300060) The power supply unit is a switched-mode type capable of supplying 24V DC at 6.25Amps continuously. Equipment of this type typically requires approximately 2-2.5Amps at 24V DC, so the PSU will be used conservatively ensuring a long operational lifetime. No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 24.5V. The output voltage may be varied using a multi-turn adjustment potentiometer mounted close to the DC output terminals. The line input voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300060 Specification AC Input Supply 110 or 220V nominal Voltage 90 to 132 or 180 to 264V (absolute limits) Frequency 47 to 63Hz DC Output Supply: 24V DC (nominal) Voltage 22 to 26V (absolute limits) Current 6.25A STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 470 of 500 25.3.2. 700MHz Uplink Amplifier (50-132107) 2U rack mount tray 700MHz Uplink Amplifier (50-132107) List of major Components Section 25.3.2.3. 25.3.2.4. 25.3.2.5. 25.3.2.6. 25.3.2.7. 25.3.2.8. 25.3.2.9. 25.3.2.10. Component Part 10-000701 11-006702 12-021901 13-003412 17-001109 17-001201 80-008901 94-100004 96-300052 Component Part Description Switched Attenuator 0.25Watt, 0 - 30dB Low Noise Amplifier Low Power Amplifier DC/DC Converter AGC Detector Assembly (Logarithmic) AGC Detector Assembly 12V (Single) Relay Board Dual Diode Assembly 12V Switch-Mode PSU Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 471 of 500 25.3.2.1. 700MHz Uplink Amplifier (50-132107) Outline Drawing Drawing number 50-1321107 POWER ON ALARM STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 472 of 500 25.3.2.2. 700MHz Uplink Amplifier (50-132107) System Diagram Drawing number 50-132187 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 473 of 500 25.3.2.3. Switched Attenuator 0.25Watt, 0 - 30dB (10-000701) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. Switched Attenuator 10-000701 provides attenuation from 0 to 30dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000701 Specification PARAMETER Attenuation Values Attenuation Steps Power Handling Attenuation Accuracy Frequency Range Impedance Connectors VSWR Weight Temperature operation range storage SPECIFICATION 0-30dB 2, 4, 8 and 16dB 0.25 Watt ± 1.0 dB DC to 1GHz 50Ω SMA 1.3:1 0.2kg -20°C to +60°C -40°C to +70°C 25.3.2.4. Low Noise Amplifier (11-006702) The Gallium-Arsenide low noise amplifiers used in 700MHz Line Amplifier (55-165704) are double stage, solid-state low noise amplifiers. Class A circuitry is used throughout the units to ensure excellent linearity and extremely low noise over a very wide dynamic range. The active devices are very moderately rated to provide a long trouble-free working life. There are no adjustments on these amplifiers, and in the unlikely event of a failure, then the complete amplifier should be replaced. This amplifier features its own in-built alarm system which gives a volt-free relay contact type alarm that is easily integrated into the main alarm system. 11-006702 Specification PARAMETER Frequency range Bandwidth Gain 1dB Compression point OIP3 Input/Output return loss Noise figure Power consumption Supply voltage Connectors Temperature operational range storage Size Weight SPECIFICATION 800 - 1000MHz <200MHz 29dB (typical) 20dBm 33dBm >18dB 1.3dB (typical) 180mA @ 24V DC 10-24V DC SMA female -10°C to +60°C -20°C to +70°C 90 x 55 x 30.2mm 290gms (approximately) STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 474 of 500 Low Noise Amplifier (11-006702) ‘D’ Connector Pin-out details Connector pin Signal +Ve input (10-24V) GND Alarm RelayO/P bad Alarm Relay common Alarm Relay good No connection TTL voltage set TTL alarm/0V (good) O/C good/0V bad 9-Way Pin-Out Graphical Representation 25.3.2.5. Low Power Amplifier (12-021901) The low power amplifier used is a triple stage solid-state low-noise amplifier. Class A circuitry is used in the unit to ensure excellent linearity over a very wide dynamic range. The three active devices are very moderately rated to provide a long trouble-free working life. Its housing is an aluminium case (Iridite NCP finish) with SMA connectors for the RF input/output and a D-Type connector for the power supply and the Current Fault Alarm Function. There are no adjustments on this amplifier, and in the unlikely event of failure then the entire amplifier should be replaced. Low Power Amplifier (12-021901) Specification PARAMETER Frequency range Bandwidth Maximum RF output Gain 1dB compression point 3rd order intercept point Noise Figure VSWR Connectors Supply Temperature operational range storage Weight Size SPECIFICATION 800-960MHz* 20MHz * >1.0 Watt 15dB +30.5dBm +43dBm <6dB better than 1.5:1 SMA female 500mA @ 10-15V DC -10°C to +60°C -20°C to +70°C 0.5 kg 167x52x25mm * Tuned to Customer’s specification STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 475 of 500 Low Power Amplifier (12-021901) 7-Way Connector Pin-outs Connector Pin A1 (large pin) A2 (large pin) Signal +24V DC GND Alarm relay common TTL alarm/0V good Alarm relay contact (bad) Alarm relay contact (good) O/C good/0V bad (TTL) 25.3.2.6. DC/DC Converter 13-003412 13-003412 is based upon an O.E.M. DC/DC Converter module with a wide input range and and is used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in this case 24V. In the event of failure this unit should not be repaired, only replaced. 13-003412 Specification PARAMETER Operating voltage Output voltages Output current Temperature operational range storage SPECIFICATION 18 – 75V DC 12V (typical) 5.0A (Max) -10%C to +60%C -20%C to +70%C 25.3.2.7. AGC System AGC Detector Unit (17-001109) AGC Attenuator Unit (17-001201) Equipment 700MHz Uplink Amplifier (50-132107) is fitted with a wide dynamic range Automatic Gain Control (AGC) system. This is fitted in the Uplink path to avoid overloading the amplifiers (with the associated performance degradation) should a mobile be operated very close to the unit. The AFL wide dynamic range Automatic Gain Control system consists of two units, a detector/amplifier and an attenuator. The logarithmic detector/amplifier unit is inserted in the RF path on the output of the power amplifier, and the attenuator is situated in the RF path between the 1st and 2nd stages of amplification. STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 476 of 500 Normally the attenuator is at minimum attenuation. The detector/amplifier unit monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the attenuator to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided. The factory set threshold is 1dB below the Enhancer 1dB compression point. Some adjustment of this AGC threshold level is possible, a 10dB range is mostly achieved. It is not recommended under any circumstances to adjust the AGC threshold to a level greater than the 1dB compression point as system degradation will occur. The detector comprises of a 50Ω transmission line with a resistive tap which samples a small portion of the mainline power. The sampled signal is amplified and fed to a conventional half wave diode rectifier, the output of which is a DC voltage proportional to the RF input signal. This DC voltage is passed via an inverting DC amplifier with integrating characteristics, to the output, which drives the attenuation control line of the corresponding AGC attenuator. This unit is fitted at some earlier point in the RF circuit. For small signals, below AGC onset, the output control line will be close to 12V and the AGC attenuator will have minimum attenuation. As the signal level increases the control line voltage will fall, increasing the attenuator value and keeping the system output level at a constant value. The AGC onset level is adjusted by the choice of sampler resistor R1 and by the setting of potentiometer VR1, (factory set at the time of system test) do not adjust unless able to monitor subsequent RF levels. The attenuator comprises a 50Ω P.I.N diode, voltage-variable attenuator with a range of 3 to 30dB. The attenuation is controlled by a DC voltage which is derived from the associated AGC detector unit. Wide Dynamic Range AGC Specification PARAMETER Frequency Range Attenuation Range Attenuation Steps VSWR RF Connectors Power attenuator Handling detector/amp Temperature operation Range storage attenuator pcb Size detector/amp pcb attenuator Weight detector/amp SPECIFICATION up to 1000MHz 3 to 30dB continuously variable better than 1.2:1 SMA female 1W >30W (or as required) -10°C to +60°C -20°C to +70°C 50 x 42 x 21mm 54 x 42 x 21mm 90gm 100gm 25.3.2.8. 12V (Single) Relay Board (80-008901) The General Purpose Relay Board allows the inversion of signals and the isolation of circuits. It is equipped with a single dual pole change-over relay RL1, with completely isolated wiring, accessed via a 15 way in-line connector. The relay is provided with polarity protection diodes and diodes for suppressing the transients caused by "flywheel effect" which can destroy switching transistors or induce spikes on neighbouring circuits. It’s common use is to amalgamate all the alarm signals into one, volts-free relay contact pair for the main alarm system. STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 477 of 500 80-008901 Specification PARAMETER SPECIFICATION Operating voltage 8 to 30V (floating earth) Alarm threshold Vcc - 1.20 volt +15% Alarm output relay contacts: Max. switch current 1.0Amp Max. switch volts 120Vdc/60VA Max. switch power 24W/60VA Min. switch load 10.0µA/10.0mV Relay isolation 1.5kV Mechanical life >2x107 operations Relay approval BT type 56 Connector details Screw terminals Temperature operational -10°C to +60°C range storage -20°C to +70°C 25.3.2.9. Dual Diode Assembly (94-100004) The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so that the main DC rail within the equipment can be sourced from either a mains driven PSU, or externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty diodes and they prevent any reverse current from flowing back to their source or the alternative supply rail. Combining diodes such as these will also be used if the equipment is to be powered from external back-up batteries. 25.3.2.10. 12V Switch-Mode PSU (96-300052) No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from the power supply may be measured on its output terminals. This is typically set to 12.2V. The adjustment potentiometer will be found close to the DC output terminals. All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by the operator. 96-300052 Specification AC Input Supply 110 or 220V nominal Voltage 85 - 265V AC (absolute limits) Frequency 47 to 63Hz DC Output Supply 12V DC (nominal) Voltage 10.5-13.8V (absolute limits) Current 12.5A STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 478 of 500 25.3.3. 700MHz Downlink Splitter (50-132108) 2U rack mount tray 700MHz Downlink Splitter (50-132108) List of Major Components Section 25.3.3.3. 25.3.3.4. 25.3.3.5. Component Part 05-003302 10-000901 80-007401 Component Part Description Four Way Splitter/Combiner Switched Attenuator 0.25W, 0 - 15dB Dummy Load Qty Per Assembly STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 479 of 500 25.3.3.1. 700MHz Downlink Splitter (50-132108) Outline Drawing Drawing number 50-1321108 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 480 of 500 25.3.3.2. 700MHz Downlink Splitter (50-132108) System Diagram Drawing number 50-132188 STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 481 of 500 25.3.3.3. Four Way Splitter/Combiner (05-003302) The Splitter/Combiner used is a device for accurately matching two or more RF signals to single or multiple ports, whilst maintaining an accurate 50Ω load to all inputs/outputs and ensuring that the VSWR and insertion losses are kept to a minimum. Any unused ports should be terminated with an appropriate 50Ω load. Four Way Splitter (05-003302) Specification PARAMETER Frequency range: Bandwidth: Rejection: Insertion loss: Connectors: Weight: operational Temperature range: storage SPECIFICATION 700-980MHz 180MHz >14dB <7.0dB (in band) N type, female <1.5kg -20%C to +60%C -40%C to +70%C 25.3.3.4. Switched Attenuator 0.25W, 0 - 15dB (10-000901) In many practical applications for Cell Enhancers etc., the gain in each path is found to be excessive. Therefore, provision is made within the unit for the setting of attenuation in each path, to reduce the gain. 10-000901 provides attenuation from 0 - 15dB in 2 dB steps The attenuation is simply set using the four miniature toggle switches on the top of each unit. Each switch is clearly marked with the attenuation it provides, and the total attenuation in line is the sum of the values switched in. They are designed to maintain an accurate 50Ω impedance over their operating frequency at both input and output. 10-000901 Specification PARAMETER Attenuation Values Attenuation Steps Power Handling Attenuation Accuracy Frequency Range Impedance Connectors VSWR Weigh Temperature operation range storage SPECIFICATION 0-15dB 1, 2, 4 and 8dB 0.25 Watt ± 1.0 dB DC to 1GHz 50Ω SMA 1.3:1 0.2kg -20°C to +60°C -40°C to +70°C STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 482 of 500 25.3.3.5. Dummy Load (80-007401) When a combiner system is used to split or combine RF signals, in many cases it is most cost effective to use a standard stock item 4, 6 or 8 port device where, in fact, only a 3 or 6 port device is needed. In this case seven of the outputs from the Four Way Splitter/Combiner (05-003302) have their ports terminated with Dummy Load (80-007401) in order to preserve the correct impedance of the devices over the specified frequency range. This also has the advantage of allowing future expansion capability should extra channels or other functions become necessary. Dummy Load (80-007401) Specification Parameter Frequency Range Power Rating VSWR 0-500MHz (Max) 500-1000MHz Temperature Connector Nominal Impedance Specification 0 to 1000MHz 1.6 Watts 1.2:1 1.3:1 -20 to +55°C ‘N’ type Male 50 Ohms STTRS DOCUMENTATION Document Number 80-330501HBKM – Issue A - Draft Page 483 of 500
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